Well cementing ring isolation ability testing device
A capability testing and cementing technology, applied in construction and other directions, can solve the problems of inconvenient removal of the cement sheath, damage to the device, and no mention of the operation of removing the cement sheath, so as to avoid scalding the staff, prolong the service life, reduce the The effect of heat transfer
Inactive Publication Date: 2019-12-13
中国石油天然气股份有限公司西南油气田分公司工程技术研究院 +1
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Problems solved by technology
However, the technical solution of the above patent does not mention the removal operation of the cement sheath after the test is over, and from the design of the above technical solution, it is extremely inconvenient to take out the cement sheath after curing, and taking it out forcibly will damage the device
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Embodiment 1
[0042] see figure 1 and figure 2 , a cement sheath sealability test device, including a test device body, the test device body includes a protective shell 1 and an upper kettle cover 2, the upper kettle cover 2 is connected to the upper end of the protective shell 1, please refer to image 3 and Figure 4 , the inner wall of the protective shell 1 is fixedly connected with an insulating layer 3, the insulating layer 3 is located inside the protective shell 1, the inner bottom of the upper kettle cover 2 is fixedly connected with the inner kettle bottom cover 4, and the lower end of the upper kettle cover 2 is fixedly connected with a casing 5, The lower end of the casing 5 is rotationally connected with the bottom cover 4 of the inner kettle, and a simulated stratum 7 is arranged on the outside of the casing 5, and a cement cavity is provided between the casing 5 and the simulated stratum 7, and the cement cavity is filled with a cement sheath 6 to simulate the stratum The ...
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Abstract
The invention discloses a well cementing ring isolation ability testing device and belongs to the field of petroleum engineering well cementing, The well cementing ring isolation ability testing device comprises a protective shell and an upper kettle cover; the upper kettle cover is connected to the upper end of the protective shell; an insulating layer is fixedly connected to the inner wall of the protective shell and is arranged on the inner side of the protective shell; an inner kettle bottom cover is fixedly connected to the inner bottom end of the upper kettle cover; a sleeve is fixedly connected to the lower end of the upper kettle cover; the lower end of the sleeve is rotationally connected with the inner kettle bottom cover; a simulated formation is arranged on the outer side of the sleeve; and a cement cavity is arranged between the sleeve and the simulated formation and is filled with a cement ring. For the well cementing ring isolation ability testing device, the simulated formation inside the testing device is arranged into two portions, the cured cement ring can be easily taken out by needing to separate two portions of the simulated formation from each other only after testing is finished, so that the testing device can be well protected, and the service life of the testing device is prolonged.
Description
technical field [0001] The invention relates to the field of petroleum engineering well cementing, and more specifically relates to a cementing cement sheath sealing ability testing device. Background technique [0002] Oil and gas well cementing operation refers to the process of injecting oil well cement into the annular space between the downhole casing and the formation to make the cement slurry condense and solidify within the design time to form a cement sheath with interlayer isolation ability. The role of the cement sheath in the downhole is not only to seal the formation, but also to suspend and protect the casing and to prolong the production cycle of the whole well. [0003] However, the service environment of the cement sheath in the underground is very harsh. During the actual construction on site, working conditions such as casing eccentricity, pot-bellied wellbore, mud mixing, and uneven filling will also have a non-negligible impact on the performance of the...
Claims
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Inventor 夏宏伟缪云唐诗国辜涛郑友志唐思洪焦利宾王福云青胜兰付志赵彬凌程纯勇张文张占武杨涛余江郭枫林
Owner 中国石油天然气股份有限公司西南油气田分公司工程技术研究院